Head-to-Head Comparison

Hamilton Khaki Field Automatic vs Seiko Prospex Solar Diver SNE595

Hamilton's field watch meets Seiko's diver

Quick Verdict

The Hamilton Khaki Field Automatic ($500–$1,000) and Seiko Prospex Solar Diver SNE595 ($500–$1,000) are closely matched timepieces at similar price points. The Khaki Field Automatic emphasizes Automatic (ETA C07.611 base) engineering while the Prospex Solar Diver SNE595 focuses on Seiko (Japan) craftsmanship.

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Hamilton Khaki Field Automatic

Hamilton

Khaki Field Automatic

$500–$1,000

Seiko Prospex Solar Diver SNE595

Seiko

Prospex Solar Diver SNE595

$500–$1,000

Specifications Compared

FeatureHamilton Khaki Field AutomaticSeiko Prospex Solar Diver SNE595
Price$500–$1,000$500–$1,000
Case Size38mm41.0mm
MovementAutomatic H-10Solar Quartz
Caliber TypeAutomatic (ETA C07.611 base)Seiko Solar Quartz
Power Reserve80 Hours
Water Resistance100m (10 ATM)200m Diver
CrystalSapphire CrystalSapphire
Case MaterialStainless Steel
OriginSwiss MadeSeiko (Japan)

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Hamilton's design language vs Seiko's approach

The Hamilton Khaki Field Automatic features a Stainless Steel case at 38mm with Sapphire Crystal protection. The Seiko Prospex Solar Diver SNE595 offers steel construction at 41.0mm with Sapphire. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Hamilton

Automatic H-10 vs Solar Quartz

The Khaki Field Automatic runs the Automatic H-10 (Automatic (ETA C07.611 base), 80 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Prospex Solar Diver SNE595 uses the Solar Quartz (Seiko Solar Quartz, standard reserve) at standard. The Khaki Field Automatic edges ahead on power reserve.

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Wearability & Fit

Edge: Hamilton

38mm vs 41.0mm — different wrist presence

At 38mm, the Khaki Field Automatic wears more compactly on smaller wrists compared to the Prospex Solar Diver SNE595 at 41.0mm. Water resistance differs: 100m (10 ATM) vs 200m Diver.

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Value & Cost of Ownership

Edge: Draw

Same tier — different value propositions

The Hamilton Khaki Field Automatic sits at $500–$1,000 and the Seiko Prospex Solar Diver SNE595 at $500–$1,000. On the specs that outlast any price: the Khaki Field Automatic uses Sapphire Crystal with 80 Hours, against Sapphire and a standard reserve on the Prospex Solar Diver SNE595. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Seiko

100m (10 ATM) vs 200m Diver

The Khaki Field Automatic is rated to 100m (10 ATM) while the Prospex Solar Diver SNE595 handles 200m Diver. The Prospex Solar Diver SNE595 offers superior water resistance.

Our Verdict

Hamilton

Khaki Field Automatic

Choose the Hamilton Khaki Field Automatic if you prioritize Automatic (ETA C07.611 base) engineering, Swiss Made craftsmanship, and 100m (10 ATM) water resistance. At $500–$1,000, it delivers Automatic H-10 with 80 Hours power reserve.

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Seiko

Prospex Solar Diver SNE595

Choose the Seiko Prospex Solar Diver SNE595 if you value Seiko Solar Quartz technology, Seiko (Japan) heritage, and 41.0mm proportions. At $500–$1,000, the Solar Quartz with ample power reserve makes it a compelling choice.

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The Bottom Line

The Hamilton Khaki Field Automatic and Seiko Prospex Solar Diver SNE595 represent two distinct approaches to fine watchmaking — the Hamilton bringing Swiss Made tradition while Seiko delivers Seiko (Japan) engineering.

Frequently Asked Questions

Neither is objectively better — they serve different preferences. The Hamilton Khaki Field Automatic ($500–$1,000) offers Automatic H-10 with 80 Hours power reserve, while the Seiko Prospex Solar Diver SNE595 ($500–$1,000) features Solar Quartz with 200m Diver water resistance. Choose based on your priorities: Swiss Made craftsmanship vs Seiko (Japan) engineering.
Both are priced similarly, making this a question of preference rather than value. The Khaki Field Automatic emphasizes Automatic (ETA C07.611 base) technology while the Prospex Solar Diver SNE595 prioritizes Seiko Solar Quartz precision.
Both are suitable for daily wear. The Khaki Field Automatic at 38mm with 100m (10 ATM) water resistance handles everyday situations. The Prospex Solar Diver SNE595 at 41.0mm with 200m Diver is similarly capable. The Khaki Field Automatic uses Sapphire Crystal while the Prospex Solar Diver SNE595 uses Sapphire.

How This Page Was Made

Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.